Q: Is 261,665 a Prime Number?
A: No, 261,665 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 261665 can be evenly divided by 1 5 59 295 887 4,435 52,333 and 261,665, with no remainder.
Since 261,665 cannot be divided by just 1 and 261,665, it is not a prime number.